Great game!!
A very fun game, definitely one I would come back to the next day and play again for a couple of hours. I love the idea of a 'frame' score, because you obviously can't get to them when you're first starting off, but when you get to the later levels and your skills have increased you can go back and replay the earlier levels to try and reach that score. That means: Tons of replay value!
The ideas of the gems was really good, being able to combine them and make your own gems with their own special powers is something I've never experienced in a game before. That means: Adds something new that nobody has ever experienced before!
The variety of monsters was good, and there was no difficulty wall. The dificulty is veyr gradual in this game, and you have to actually be careful and check the stats of the monsters on the side bar because if there's an epic boss coming, you're going to want to start laying down the water traps, and starts building towers and loading them with gems. That means: There's strategy involved, it's not just 'sit back, relax and let the towers do the work'.
I'm giving this game a 10, with a 5 star rating. A truly brilliant game, I haven't even finished it yet, and probably won't have for another few days. Thanks for uploading, and I hope that there's a sequel in the works!